Parc de Monceau offers something for everyone...
a carrousel (Jules Verne), honey bees, benches, a circular path for walking or running, sculptures, lawns for lounging (yes!), a pond with ducks, many shade trees, and a large play area for chidren.
I make a visit here almost every trip to Paris
Parc de Monceau
Boulevard des Courcelles
(five entrances around the park)